The rhomboid muscles are a pair of diamond-shaped muscles located in the upper back between the shoulder blades. They are primarily responsible for retracting the scapula, pulling the shoulder blades together towards the spine. This action helps to stabilize the shoulder blades during various movements such as pulling, rowing, and extending the arms. Strengthening the rhomboid muscles can improve posture, shoulder stability, and overall upper back strength.

The rhomboid muscles are a pair of diamond-shaped muscles located in the upper back between the shoulder blades. They are primarily responsible for retracting the scapula, pulling the shoulder blades together towards the spine. This action helps to stabilize the shoulder blades during various movements such as pulling, rowing, and extending the arms. Strengthening the rhomboid muscles can improve posture, shoulder stability, and overall upper back strength.